I thought this was interesting as we hired away 3 Patriots assistants. I guess we'll never know whether they were offered extensions and they turned them down, or if they were not offered extensions.

MMQB:Albert Breer wrote:

8. The Patriots’ staff attrition does have to do with professional advancement, of course. New Dolphins offensive coordinator Chad O’Shea and defensive pass-game coordinator Josh Boyer were hired over the roles they held in Foxboro, and new Miami assistant quarterbacks coach Jerry Schuplinski and Chiefs defensive line coach Brendan Daly had been passed over for promotions before bolting.

But it’s notable that so many guys had expiring deals. Usually when coaches are in that position, it’s because they let their contracts lapse as part of an exit strategy aimed at moving their careers forward. So the exodus here would indicate that a year ago, amidst everything that was happening then, a number of Patriot assistants decided to turn down extensions. Either that, or they weren’t offered them.